Pipe coupling



40 tion.

Patented Jan. 1,5, 1924.

UNITED STATES PATENT oFFicE."

LLOYD JOHNSON, F UHRICHSVILLE, OHIO.

PIPE GOUPLING.

Application led August 15, 1921. Serial No. 492,327.

To all whom it may camera.' A to coact with the pair of shoulders 12 'is a Be it known that I, LLOYD JOHNSON, `cam nut 14 and removably fitting over the citizen of the United States, residing at opppsite end of the sleeve to coact with the Uhrichsville, in the county of Tuscarawas pair of shoulders 13 is a similar nut 15. As

and State of Ohio, have invented certain best shown in Figures 2 and 3, these nuts new and useful Improvements in Pipe Couare cut away at their inner sides to provide plings, of which the following is a speciicacircumferential cam faces 16, the cam faces tion. i yof the nuts 14 mating with the shoulders This invention relates to an improved A12 and the cam faces of the nut 15 mating pipe coupling and has as one of its principal with the shoulders 13. Thus, by rotating the objects to provide a device of this characnut 14 in a clockwise direction and rotating ter whereby pipe ends may be connected Athe nut 15 in a counter-clockwisedirection, without the necessity for threading the pipes. the cam faces thereof will be caused to ride A further object of the invention is to proover the shoulders 12 and 13 for clam ing 15 vide a coupling which mayfy be readily api `the sections of the sleeve tightly toget er.

plied and wherein, in the instance of a plpe Preferably, each nut is provided with but a line, the coupling may be fitted in place single pair of cam faces..y without removing one of the pipes of the n Figure 1 of the drawing, I have shown line at the point where the coupling is to be the coupling in connection with convenap lied. vtional pipe ends 17 and arranged within the nd the invention has as a still further couplingsleeve 10.to overlie the oint beobject to provide a coupling which will form tween said pipe ends is a asket s eeve 18. a tight closed joint between the pipe ends. This gasket sleeve may Be ormed offrubber Other and incidental objeects will appear or other approved material and is preferably hereinafter. split longitudinally so that said gasket may In the drawing: be readily arranged about ,the pipe ends at the Figure 1 is a fragmentary side elevation joint therebetween. However, in applyin showing lmy improved coupling applied. the coupling, the pipe ends are first sprea Figure 2 is a sectional view on the line apart when the nut 14 is applied over one 2--2 of Figure 1, lookin in the direction pipe end and the nut 15 over the other pip of the arrows, this view i lustrating the adend. The gasket 18 is then arranged in p jacent clamping nut before beingFrotated. when the sections of the coupling sleeve are Figure 3 is a view similar to igure 2, assembled around the gasket. he nuts 14 showing the clamping nut, rotated. and 15 are then advanced over the ends of es Figure 4 is a detail perspective view showthe sleeve to coact with the pairs' of shouling one of the sections ofthe clamping sleeve ders 12 and 13 when said nuts are rotated of the device, and i t Figure 5 is a transverse sectional view iltions of the couplin sleeve together and lustrating a slightmodification ofthe invenbinding the sections a outthe pipe ends.' A secure sealed joint will thus be provided be- Referring now more particularly to the tween the pipe ends and, as will'be perdrawing, it will be seen that I employ av ceived the coupling may be readilylinstalled. metallic coupling sleeve 10 which, as sug- In igure 5 of the drawin I ave illusgested in Figure 4, is formed of companion trated a slight modification o the invention semi-cylindrical' sections cut away at their which is substantially identical with the prelongitudinal margins,vas indicated at 11, so ferred construction with the exception that that when the sections are assembled lapped the coupling sleeve, indicated at 10a, is corjoints are formed therebetween.' Rising from rugated to enhance the grippin action of each of the sections near its ends are op-v tli'e sleeve upon the pipe 'en s orholding 5o positely directed cam shoulders 12 and 13 said ends againsteparation.

extending in adirection circumferentially Having tlius describedthe invention, what of the sleeve, the shoulders 12 of the sections is 'laimed as new is: alining as do' also the shoulders 13.' Re- A pipe coupling comprising a. tubular mova y tting over one end of the sleeve gasket to be fitted about meeting pipe ends,

in opposite directions for clamping the sec--` a contraetible longitudinally split corragated sleeve fitting about said gasket and Y having external circumferentially extending cam portions, and a rotatable tubular body 5 member fitting about'said lsleeve and *having internal cam portions co-operating with the cam portions ofthe sleeve whereby a rotation of the body member upon the sleeve in one direction contracts the sleeve and in the opposite direction permits the sleeve toA exl. pand.

In testimony whereof I aix my signature.

LLOYD JOHNSON. [n 8.] 

